公开(公告)号：US11608817B2

公开(公告)日：2023-03-21

申请号：US17600120

申请日：2020-11-05

申请人： Jiangsu University

发明人： Shu Huang ,  Hang Zhang ,  Mingyuan Shan ,  Jie Sheng ,  Jinzhong Lu ,  Jianzhong Zhou ,  Jiean Wei ,  Shuangliu Zhou ,  Wei Xu

IPC分类号： F03G7/06 ,  B33Y10/00 ,  B33Y80/00 ,  B23K26/21 ,  B29C64/188 ,  H02N10/00 ,  B23K101/38 ,  B29K75/00

摘要： The present invention relates to the field of 4D printing, and particularly to an electro-responsive folding and unfolding composite material for 4D printing, a method for manufacturing the same, and a method for regulating shape memory behavior thereof. In the process of layer-by-layer printing, conductive layers are embedded into a pre-designed shape memory polymer matrix through spray-coating and laser-irradiation nano-fusion welding, to manufacture a folding and unfolding structure with electro-responsive shape memory behavior. The distribution and range of heat affected zones in the electro-responsive shape memory folding and unfolding structure are controlled by adjusting the number of electric heating layers energized and the value of an energizing voltage. The speed of shape recovery and the degree of shape recovery of the structure are regulated according to a magnitude relationship between a shape recovery force Frecovery and a resistance Fresistance to shape recovery of the structure.